有一道题画得乱七八糟的,在新东方蓝皮书上【上】 page151 题 118 The figure above represents a system of roads along with traffic flows in the direction indicated by the arrows. If the traffic were to split evenly at each fork of the road system, what percent of the traffic entering fork C would exit at Y??? A 85.% B 75% C 62.5% D 50% E 12.5%